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The Gneisses of the Bartica Assemblage, British Guiana

Published online by Cambridge University Press:  01 May 2009

R. T. Cannon
R. T. Cannon
Affiliation:
Geological Survey Department, P.O. Box, 789, Georgetown, British Guiana.
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Abstract

The results of an examination of one quarry within the gneisses of the Bartica Assemblage are described and the validity of these results throughout the whole of the Bartica Assemblage is discussed. The foliation and banding of the gneisses at Kereti Quarry are mainly the results of tectonism; concomitant metamorphism within the Amphibolite Facies was succeeded by a two-phase metasomatism involving successive additions of Na and K. These results appear valid throughout the Bartica Assemblage and it is further suggested that the main rock type distribution in the Bartica Assemblage is also controlled by tectonism.

Type
Articles
Information
Geological Magazine , Volume 99 , Issue 2 , April 1962 , pp. 164 - 172
Copyright
Copyright © Cambridge University Press 1962

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References

REFERENCES

Bradshaw, R. B., 1957. Report on the Petrology of the Bartica Area. geol. Surv. B.G., unpublished report.Google Scholar
Cannon, R. T., 1959. The Kartabu Granite. Presented at Fifth Inter-Guiana Geological Conference Georgetown, 1959.Google Scholar
Carey, S. W., 1954. The Rheid Concept in Geotectonics. J. geol. Soc. Aust., 1, 67–117.Google Scholar
Marmo, V., 1956. On the Emplacement of Granites. Amer. J. Sci., 254, 479–492.Google Scholar
McConnell, R. B., 1958. Provisional Stratigraphical Table for British Guiana. Appendix I, Ann. Rpt. For 1957, Geol. Surv. B.G., 33–53.Google Scholar
Rodgers, J. and McConnell, R. B., 1959. Need for Rock-Stratigraphic Units larger than Group. (Note 23, Stratigraphic Commission.) Bull. Amer. Ass. Petrol. Geol., 43, 1971–1975.Google Scholar
Williams, E., 1961. Flow Folding in Rocks. Nature, 189, 474–475.CrossRefGoogle Scholar